Mark W. Dowley
Solid State Communications
Paper
Tunable Low-Loss UHF Circulator for Cryogenic Applications
Abstract
A 600-MHz above-resonance circulator operating at 4.2 K has been constructed and successfully tested. Its high isolation (>30 dB), extremely low insertion loss (<0.1 dB), low VSWR (<1.1), and acceptable instantaneous bandwidth (̴6 percent) make it a promising device for utilization in narrow-band very low-noise systems. Copyright © 1982 by The Institute of Electrical and Electronics Engineers, Inc.
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